TWI602768B - Transfer device - Google Patents

Description

Transfer device

The present invention relates to a transfer device for transferring goods between a shed and a shed.

A transfer device for transferring goods between a shed and a shed is known, for example, for moving on a track along which a plurality of sheds are laid, and for transferring goods between the sheds (for example, refer to Patent Document 1). Such a transfer device includes, for example, an arm that is expandable and contractable in the front-rear direction, and a pair of hooks that are separated from each other in the front-rear direction. In such a transfer device, when the hook is brought into contact with the cargo, the arm is pushed toward the front side or is contracted toward the rear side, so that the cargo can be pushed and moved by the hook.

In addition to the arm, the transfer device is known to include a conveyor belt provided below the arm (for example, refer to Patent Documents 2 and 3). In a transfer device having such an arm and a conveyor belt, the goods can be moved by the arm and the conveyor belt.

[Prior Art Literature] [Patent Document]

[Patent Document 1] International Publication No. 2011/158422

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2012-71931

[Patent Document 3] Japanese Laid-Open Patent Publication No. 2012-71932

In the transfer device as described above, it is desirable to suppress the occurrence of breakage of the cargo, positional deviation, and the like, and to stably transfer the cargo as much as possible.

Here, it is an object of the present invention to provide a transfer device that can stably transfer cargo.

In the transfer device of the present invention, the arm is extended toward the front side in the front-rear direction, and the load placed on the mounting area is detached from the shed, and is contracted toward the rear side in the front-rear direction. The cargo placed in the shed is loaded in the mounting field; and the conveyor belt is placed in the loading field to move the goods along the front and rear directions; and the controller is the action of the control arm and the conveyor belt; the arm has: 1st The hook is movable forward and backward with respect to the first abutting position at which the cargo can be abutted, and enters the first abutting position when the cargo placed in the mounting area is detached from the shed, and the rear end of the cargo placed in the mounting area The second hook is a second abutment position that can be brought into contact with the cargo, and the cargo placed in the shed is placed in the second contact position when placed in the mounting area, and is placed in the shed. The front end of the cargo abuts; the controller is the extension of the arm when the cargo placed in the mounting area is detached from the shed. When the speed is lower, the conveyor belt is operated toward the front side, and when the cargo placed in the shed is loaded on the mounting area, the conveyor belt is operated toward the rear side at a speed lower than the contraction speed of the arm.

In this transfer device, the movable cargo is made by the arm and the conveyor belt. When the cargo placed in the mounting area is detached from the shed, the conveyor belt is moved toward the front side at a speed lower than the elongation speed of the arm. Therefore, the first hook is in a state of being pressed by the cargo, and the cargo is detached toward the shed in a state where the first hook and the cargo are optimally abutted. On the other hand, when the cargo placed in the shed is loaded on the mounting area, the conveyor belt is moved to the rear side at a speed lower than the contraction speed of the arm. Therefore, the second hook is in a state of being pressed by the cargo, and the cargo is loaded on the mounting field in a state where the second hook and the cargo are optimally abutted. Therefore, both the case where the goods are detached from the shed and the case where the goods are loaded in the mounting area can suppress the occurrence of breakage of the goods, positional deviation, and the like. Therefore, the goods can be stably transferred.

The arm is in the front-rear direction and is located between the first hook and the second hook, and the cargo detecting sensor capable of detecting the leading end of the cargo placed in the shed is preferably located closer to the second hook. When the arm is extended, the controller can calculate the position of the arm when the cargo detection sensor detects the front end of the cargo placed in the shed, and calculates that the second hook can be offset from the front end of the cargo placed in the shed. In the first position of the arm to be attached, when the cargo placed in the shed is placed in the mounting area, the arm may be operated by the first contraction speed until the second position is further forward than the first position. The second arm may be operated at a second contraction speed lower than the first contraction speed from the second position to the first position, and the arm is higher than the second contraction speed from the first position. 3 The contraction speed is operated, and the conveyor belt may be moved to the rear side by the fourth speed lower than the third contraction speed. In this case, when the arm placed in the shed is loaded on the mounting area, when the arm is extended, the second position can be calculated based on the position of the arm when the cargo detecting sensor detects the front end of the cargo placed in the shed. The hook can be at the first position of the arm that is in contact with the front end of the cargo placed in the shed. When the cargo placed in the shed is placed in the mounting area, the second hook is moved from the second position to the first position from the second position to the first position between the leading ends of the abutting goods. Further, in addition to this, the arm is operated by the first contraction speed and the third contraction speed which are faster than the second contraction speed. Therefore, the time during which the goods will be loaded can be shortened.

The conveyor belt has a first conveyor belt and a second conveyor belt that is disposed on the front side of the first conveyor belt in the front-rear direction, and the controller is configured to place two cargoes on the conveyor belt. 1 The conveyor belt and the second conveyor belt are independently driven to adjust the position of the two cargo on the conveyor belt. In this case, the position of the two goods on the conveyor belt can be optimally adjusted, and the transfer can be performed efficiently without stopping the operation of the transfer device.

According to the present invention, it is possible to provide a transfer device that can stably transfer goods.

D1‧‧‧ distance

D2‧‧‧ distance

F‧‧‧Loading field

FA, FB‧‧‧mounting field (first mounting field, second mounting field)

P1‧‧‧ abutment position (first abutment position, third abutment position)

P2‧‧‧ Abutment position (2nd abutment position)

P3‧‧‧ Abutment position (1st abutment position, 3rd abutment position)

P5, P7‧‧‧ position (1st position)

P6‧‧‧ position (2nd position)

R, R1, R2‧‧‧ goods

S1~S4‧‧‧ goods detection sensor

1‧‧‧Head height crane (transfer device)

2‧‧‧ Walking trolley

3‧‧‧ pillar installation

4‧‧‧ Lifting table

5‧‧‧arm

6‧‧‧Conveyor belt

6A‧‧‧Conveyor belt (1st conveyor belt)

6B‧‧‧Conveyor belt (2nd conveyor belt)

7‧‧‧ Controller

51‧‧‧Base section

52‧‧‧Intermediate

53‧‧‧ top

54, 55, 56‧‧‧ hooks (1st hook, 2nd hook)

80‧‧‧ Track

90‧‧‧Carriage

90L, 90R‧‧‧ carrier

90R‧‧‧ carrier

91‧‧‧ shed

100‧‧‧Building

[Fig. 1] A front view of a transfer device according to an embodiment of the present invention.

[Fig. 2] A plan view of the transfer device of Fig. 1.

[Fig. 3] A plan view showing an operation of the transfer device of Fig. 1 when the goods are loaded in the mounting area.

[Fig. 4] A graph showing the input of the cargo detecting sensor, the contraction speed of the arm, and the speed of the conveyor belt when the transfer device of Fig. 1 loads the cargo in the mounting area.

[Fig. 5] A plan view showing an operation when the transfer device of Fig. 1 removes the cargo toward the shed.

[Fig. 6] A graph showing the input of the cargo detecting sensor, the elongation speed of the arm, and the speed of the conveyor belt when the transfer device of Fig. 1 removes the cargo toward the shed.

[Fig. 7] A plan view showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

[Fig. 8] A plan view showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

[Fig. 9] A plan view showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

[Fig. 10] A plan view showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

[Fig. 11] A plan view showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

Hereinafter, the present invention will be described in detail with reference to the drawings. An embodiment of a transfer device. The same or equivalent components are denoted by the same reference numerals, and the description thereof will not be repeated.

Fig. 1 is a front view of a transfer device according to an embodiment of the present invention, and Fig. 2 is a plan view of the transfer device of Fig. 1. As shown in FIGS. 1 and 2, the stacker (transfer device) 1 is disposed, for example, in the house 100, and transfers the cargo R such as a container or a cardboard between the carrier 90 and the carrier 90.

The carrier 90 is for storing the goods R. The carrier 90 is provided with a plurality of columns in the building 100. Each of the carriers 90 extends in a predetermined X direction (horizontal direction). The adjacent carriers 90L, 90R are arranged to be substantially parallel in such a manner as to face each other. In each of the carriers 90, a plurality of shelves 91 for storing the goods R are formed along the X direction and the vertical direction. In the carrier 90, the goods R are taken in and out of the area held by the facing carriers 90L, 90R. In the field held by the facing carriers 90L, 90R, the rails 80, 80 for the stacking crane 1 are laid.

The stacking crane 1 is for the shed 91 to take in and out of the cargo R. The stacker crane 1 is disposed in a field that is held by the facing carriers 90L, 90R. The stacker crane 1 includes a traveling carriage 2 that travels along the rails 80 and 80, and two pillar-supporting devices 3 and 3 that are erected on the traveling trolley 2, and lifts up and down along the pillar devices 3 and 3. Taiwan 4. The stacker crane 1 moves along the rails 80, 80 and moves along the carriage 90 in the X direction. Thereby, the stacking crane 1 is a plurality of sheds 91 provided along the X direction, so that the goods R can be taken in and out. Moreover, the stacking crane 1 is raised and lowered by the lifting platform 4 The plurality of sheds 91 arranged in the vertical direction are such that the goods R can be taken in and out.

Here, the transfer between the stacker 1 and the carrier 90L and the transfer between the stacker 1 and the carrier 90R are performed in the same manner. Therefore, the transfer between the stacker crane 1 and the carrier 90L will be described below. Further, the horizontal direction and the direction perpendicular to the X direction are the Y direction (front and rear direction). In the Y direction, the side of the carrier 90L is the front side, and the side of the stacker crane 1 is the rear side.

The stacking crane 1 is provided on the lifting platform 4 and has a mounting field F for arranging the cargo R. The mounting field F has a mounting field (first mounting field) FA provided on the rear side and a mounting field (second mounting field) FB provided on the front side. In the mounting area FA and the mounting area FB, the goods R can be arranged separately. The stacker crane 1 is provided on the lifting platform 4 and includes a pair of arms 5 and 5, a conveyor belt 6, and a controller 7.

The pair of arms 5, 5 are separated from each other along the X direction. The arm 5 is extendable in the Y direction and is expandable and contractible in the Y direction. Specifically, the arm 5 is a telescopic structure including the base portion 51, the intermediate portion 52, and the top portion 53. The base portion 51, the intermediate portion 52, and the top portion 53 are members that extend in the Y direction.

When the intermediate portion 52 is advanced toward the shed 91 side with respect to the base portion 51 by the drive source, the top portion 53 is advanced toward the shed 91 side with respect to the intermediate portion 52 in conjunction with this operation. That is, the arm 5 is elongated toward the front side in the Y direction. On the other hand, when the intermediate portion 52 is retracted from the shed 91 side with respect to the base portion 51 by the drive source, the top portion 53 is retracted from the shed 91 side with respect to the intermediate portion 52 in conjunction with this operation. That is, the arm 5 is taken toward the rear side along the Y direction. Shrink.

The top portion 53 is a hook 54, a hook 55, and a hook 56 for moving the cargo R. The hook 54 is provided at the rear end of the top portion 53 in the Y direction. The hook 55 is provided in the middle of the top portion 53 in the Y direction. The hook 56 is provided at the front end of the top portion 53 in the Y direction.

The hook 54 is rotatable around an axis parallel to the Y direction by a driving source. Thereby, the hook 54 can advance and retreat to the contact position P1 which can contact the cargo R. When the cargo R disposed in the mounting area FA is detached from the shed 91, the hooks 54 and 54 enter the contact position P1 and come into contact with the rear end of the cargo R disposed in the mounting area FA. By elongating the arms 5 and 5 toward the front side from this state, the goods R placed in the mounting area FA can be detached from the shed 91.

The hook 55 is rotatable around an axis parallel to the Y direction by a driving source. Thereby, the hook 55 can advance and retreat to the contact position P2 which can contact the cargo R. When the goods R placed in the mounting area FB are detached from the shed 91, the hooks 55 and 55 enter the contact position P2 and come into contact with the rear end of the goods R placed in the mounting area FB. By elongating the arms 5 and 5 toward the front side from this state, the goods R placed on the mounting area FB can be detached from the shed 91.

When the goods R placed in the shed 91 are placed in the mounting area FA, the hooks 55 and 55 enter the contact position P2 and come into contact with the front end of the goods R placed in the shed 91. By contracting the arms 5 and 5 toward the rear side from this state, the goods R placed in the shed 91 can be loaded on the mounting area FA.

The hook 56 is rotatable around an axis parallel to the Y direction by a driving source. Thereby, the hook 56 can advance and retreat to the contact position P3 which can contact the cargo R. When the goods R placed in the shed 91 are placed on the mounting area FB, the hooks 56 and 56 enter the contact position P3 and come into contact with the front end of the goods R placed in the shed 91. By contracting the arms 5 and 5 toward the rear side from this state, the goods R placed in the shed 91 can be loaded on the mounting area FB.

The top portion 53 is a cargo detecting sensor S1 to S4 for detecting the goods R. The goods detecting sensors S1 to S4 are, for example, photo sensors, and each has a light-emitting portion of the arm 5 provided on one side and a light-receiving portion of the arm 5 provided on the other side. The cargo detecting sensor S1 is disposed in the Y direction and at a position between the hook 54 and the hook 55, and is disposed closer to the hook 54 (a position slightly earlier than the hook 54). The cargo detecting sensor S2 is disposed in the Y direction and at a position between the hook 54 and the hook 55, and is disposed closer to the hook 55 (a position slightly rearward than the hook 55). The cargo detecting sensor S3 is disposed in the Y direction and at a position between the hook 55 and the hook 56 at a position close to the hook 55 (a position slightly ahead of the hook 55). The cargo detecting sensor S4 is disposed in the Y direction and at a position between the hook 55 and the hook 56 at a position close to the hook 56 (a position slightly rearward of the hook 56).

The conveyor belt 6 is disposed in the mounting field F and moves the goods R in the Y direction. The conveyor belt 6 has a conveyor belt (first conveyor belt) 6A provided in the mounting area FA, and a conveyor belt (second conveyor belt) 6B provided in the mounting area FB. Conveyor belt 6A and conveyor belt 6B are separately set Below the arm 5.

The controller 7 controls the operation of each component of the stacker crane 1. The controller 7 is, for example, an electronic control unit composed of a CPU, a ROM, a RAM, and the like. In the controller 7, information necessary for control is input from each component of the stacker 1. The controller 7 is implemented by the CPU by loading a program stored in the ROM on the RAM, and each processing unit is constituted by a software. Further, each of the processing units may be formed of a hard body.

Next, the operation of the stacker crane 1 will be described. First, the case where the goods R placed in the shed 91 are loaded on the mounting area F will be described.

Fig. 3 is a plan view showing the operation of the transfer device of Fig. 1 when the goods are loaded in the mounting area, and Fig. 4 is a view showing the sense of goods detected when the transfer device of Fig. 1 is loaded with the goods in the mounting area. A graph of the input of the detector, the contraction speed of the arm, and the speed of the conveyor belt. Fig. 4(a) shows the input of the goods detecting sensor S4. Fig. 4(b) shows the contraction speed of the arm 5. Figure 4 (c) shows the speed of the conveyor belt 6B.

Fig. 3 is a view showing a case where one cargo R2 to be placed in the shed 91 is mounted on the mounting area FB. In this case, the hooks 56 and 56 function as a second hook that abuts against the front end of the cargo R2. Further, the contact position P3 is the second abutment position at which the hooks 56 and 56 enter.

As shown in Fig. 3, in the stacker crane 1, when the cargo R2 is loaded before the mounting field FB, the arms 5 and 5 are extended in advance. The object detecting sensor S4 is passed through the front end of the cargo R2. At this time, the cargo detecting sensor S4 switches from the detected state to the non-detected state, and detects the leading end of the cargo R2. At this time, the input of the signal from the goods detecting sensor S4 to the controller 7 is stopped. The controller 7 calculates the hooks 56, 56 and the goods R2 when the arms 5, 5 are contracted based on the positions of the arms 5, 5 at this time and the intervals between the hooks 56, 56 and the cargo detecting sensor S4. The position (first position) P5 of the arms 5 and 5 at which the front end starts to abut is memorized. Further, after the arms 5 and 5 are extended, the controller 7 causes the hooks 55 and 55 to enter the contact position P2, and the hooks 56 and 56 enter the abutment position P3. Further, the hooks 55 and 55 may not enter the contact position P2.

As shown in Fig. 4(b), when the cargo R2 is loaded on the mounting area FB, first, the controller 7 starts the contraction of the arm 5 at time t0. Further, the controller 7 accelerates the contraction of the arm 5 to the speed (first contraction speed) V1.

Next, at time t1, the controller 7 decelerates the arm 5 to the contraction speed V1 when the cargo detection sensor S4 reaches the position (second position) P6 (see FIG. 3) that is further forward than the position P5. Lower contraction speed (second contraction speed) V2. Here, the position P6 is set such that the arm 5 is decelerated from the contraction speed V1 to the contraction speed V2 until the arm 5 reaches the position P5 and the hooks 56 and 56 abut against the distal end of the cargo R2.

Next, at time t2, when the arm 5 reaches the position P5 and the hooks 56, 56 abut against the front end of the cargo R2, the controller 7 accelerates the arm 5 to a speed higher than the contraction speed V2 as shown in Fig. 4(b). High shrinkage speed (third shrinkage speed) V3. Also, here, the contraction speed V3 is set The setting is higher than the shrinking speed V1.

And the controller 7, when the arm 5 reaches the position P5 and the hooks 56, 56 abut against the front end of the cargo R2, as shown in Fig. 4(c), the conveyor belt 6B is at a lower speed than the contraction speed V3 (4th) Speed) V4 accelerates toward the rear side.

When the rear end of the cargo R2 enters the conveyor belt 6B, the conveyor belt 6B is operated at a speed V4 lower than the contraction speed V3 of the arms 5 and 5, and the hooks 56 and 56 press the front end of the cargo R2. Thereby, the goods R2 are transferred in a state where the hooks 56, 56 and the goods R2 are optimally abutted. When the cargo R2 as a whole is placed on the conveyor belt 6B, the controller 7 is the contraction of the stop arms 5, 5. Further, when the conveyance belt 6B moves the conveyance R2 to the desired position, the controller 7 stops the conveyance belt 6B and ends the operation.

Next, a case where the goods R placed in the mounting area F are detached from the shed 91 will be described.

Fig. 5 is a plan view showing the operation of the transfer device of Fig. 1 when the cargo is detached from the shed, and Fig. 6 is a view showing the cargo detecting sensor when the transfer device of Fig. 1 is detached from the shed. A graph of the input, the elongation rate of the arm, and the speed of the conveyor belt. Fig. 6(a) shows the input of the goods detecting sensor S3. Fig. 6(b) shows the elongation speed of the arm 5. Figure 6(c) shows the speed of the conveyor belt 6B.

Fig. 5 shows a case where only the cargo R2 placed in the mounting area FB is detached from the shed 91. In this case, the hooks 55 and 55 function as the first hook that abuts against the rear end of the cargo R2. And the abutment position P2 is the first abutment position at which the hooks 55 and 55 enter.

As shown in Fig. 5, before the cargo R2 is detached from the shed 91, the controller 7 causes the hooks 55, 55 to enter the contact position P2 in advance, and causes the hooks 56, 56 to enter the contact position P3. Further, the hooks 56 and 56 may not enter the contact position P2. Further, the controller 7 is in a state in which the hooks 55 and 55 and the rear end of the cargo R2 are in contact with each other by moving the conveyor belt 6B toward the rear side. Thereby, the cargo detecting sensor S3 is in the detected state, and the signal is input from the cargo detecting sensor S3 to the controller 7.

As shown in Fig. 6 (b) and (c), when the cargo R2 is detached toward the shed 91, the controller 7 starts the elongation of the arm 5 at time t3 and accelerates the arm 5 to the elongation speed V5. Further, the controller 7 operates the conveyor belt 6B toward the front side at a speed V6 lower than the elongation speed V5. Since the conveyor belt 6B is operated at a speed V6 lower than the elongation speed V5 of the arms 5 and 5, the hooks 55 and 55 press the rear end of the cargo R2. Thereby, the goods R2 are transferred in a state where the hooks 55, 55 and the goods R2 are optimally abutted. When the cargo R2 is entirely loaded on the shed 91 and the cargo R2 is moved to the desired position by the arms 5, 5, the controller 7 stops the arms 5, 5 and the conveyor belt 6B, and ends the operation.

As described above, in the stack crane 1 of the present embodiment, the goods R2 are made movable by the arms 5 and 5 and the conveyor belts 6A and 6B. When the cargo R2 disposed in the mounting area FB is detached from the shed 91, the conveyor belt 6B is moved toward the front side at a speed V6 lower than the elongation speed V5 of the arms 5 and 5. Therefore, the hooks 55 and 55 push the cargo, and the cargo R2 is directed to the shed 91 in a state where the hooks 55 and 55 and the cargo R2 are optimally abutted. Was removed. On the other hand, when the cargo R2 disposed in the shed 91 is placed on the mounting field FB, the conveyor belt 6B is moved toward the rear side at a speed V4 lower than the contraction speed V3 of the arms 5 and 5. Therefore, the hooks 56 and 56 are in a state of being pressed toward the cargo R2, and the cargo R2 is loaded on the mounting area FB in a state where the hooks 56 and 56 and the cargo R2 are optimally in contact with each other. Therefore, in the case where the cargo R2 is detached toward the shed 91 and the case where the cargo R2 is placed on the mounting area FB, the occurrence of damage or positional deviation of the cargo R2 is suppressed. Therefore, the cargo R2 can be stably transferred. Further, in addition to the arms 5, 5, since the cargo R2 is moved by the conveyor belt 6B, the load applied to the arms 5, 5 can be alleviated.

Further, in the stacker crane 1, the arms 5, 5 are located in the Y direction between the hook 55 and the hook 56. Further, at a position where the hook 56 is close, the cargo detecting sensor S4 that can detect the leading end of the cargo R2 disposed in the shed 91 is provided. When the arms 5 and 5 are extended, the controller 7 can detect the positions of the arms 5 when the front end of the cargo R2 disposed in the shed 91 is detected based on the cargo detecting sensor S4, and calculate the hooks 56 and 56 and the goods R2. The position of the arm at which the front end can abut P5. When the cargo R2 placed in the shed 91 is placed on the mounting area FB, the arms 5 and 5 are operated by the contraction speed V1 from the position P6 on the front side from the position P5, and from the position P6 to the position P5. The arms 5, 5 are operated by a contraction speed V2 lower than the contraction speed V1, and the arms 5, 5 are operated from a contraction speed V3 higher than the contraction speed V2 from the position P5. Further, the conveyor belt 6B is moved toward the rear side by a speed V4 lower than the contraction speed V3. Therefore, when the arms 5 and 5 are extended before the load R2 placed in the shed 91 is placed on the mounting area FB, The position of the arm 5 at which the leading end of the hooks 56, 56 and the cargo R2 can abut is stored in accordance with the position of the arm 5 when the cargo detecting sensor S4 detects the leading end of the cargo R2. When the cargo R2 is loaded on the mounting area FB, the hooks 56 and 56 are operated by the contraction speed V2 arms 5 and 5 from the position P6 to the position P5 between the tips of the abutting goods R2. Further, in addition to this, the arms 5 and 5 are operated by the contraction speed V1 and the contraction speed V3 which are higher than the contraction speed V2. Therefore, the time for loading the goods R2 can be shortened.

Next, when the two goods R1 and R2 are placed in the mounting area F, the positions of the goods R1 and R2 are adjusted. 7 to 11 are plan views showing an example of an operation when the transfer device of Fig. 1 adjusts the positions of two goods.

In the case where the stacker 1 adjusts the positions of the goods R1 and R2, for example, the goods R1 and R2 are transferred between the stacker 1 and the transfer station for loading and unloading in the building 100. The transfer station is provided with a conveyor belt. When the transfer between the stacker 1 and the transfer station is carried out, the conveyor belt 6 and the shifting crane 1 are used without using the arms 5 and 5. The conveyor belt of the station is transferred. In this case, for example, when the goods R1 and R2 are loaded from the transfer station to the stacker 1 and the goods R1 and R2 are in contact with each other, the hooks 54 to 56 cannot be brought into the contact positions P1 to P3. Further, for example, when the stacker R1 and R2 are detached from the stacking crane 1 to the transfer station, if the goods R1 and R2 abut each other, there is a possibility that only one cargo on the transfer station side is erroneously recognized. In the case of these, since it is necessary to stop the operation of the stacker 1 , it is preferable that the stacking crane 1 can adjust the interval between the two cargoes.

In an example, as shown in FIG. 7( a ), the cargo R1 is disposed along the front end of the mounting area FA and is disposed in the mounting area FA. Thereby, the cargo detecting sensor S2 is in the detected state. The cargo R2 is disposed along the rear end of the mounting area FB and is disposed in the mounting area FB. Thereby, the cargo detecting sensor S3 is in the detected state. In this case, the interval between the goods R1 and R2 is narrow, and when the hooks 55 and 55 are rotated to the abutment position P2, there is a possibility that the hooks 55 and 55 collide with the upper faces of the goods R1 and R2. Therefore, there is a possibility that the hooks 55, 55 cannot be brought into the abutment position P2.

Here, as shown in FIG. 7(b), the cargo detecting sensor S2 moves the conveyor belt 6A toward the rear side from the detected state to the non-detected state, and the cargo detecting sensor S3 is The conveyor belt 6B is moved toward the front side until it is switched from the detected state to the non-detected state. By the above operation, the cargo R1 is disposed at the center portion of the mounting area FA, and the cargo R2 is disposed at the center portion of the mounting area FB. Thereby, the hooks 55 and 55 can be made to enter the contact position P2.

In another example, as shown in Fig. 8(a), the goods R1 are arranged across the mounting fields FA and FB. Thereby, the goods detecting sensors S2 and S3 are in the detected state. The cargo R2 is disposed along the front end of the mounting field FB and is disposed in the mounting field FB. Thereby, the cargo detecting sensor S4 is in the detected state. In this case, if the hooks 55, 55 are rotated to the abutment position P2, there is a possibility that the hooks 55, 55 collide with the upper surface of the cargo R1. Further, if the hooks 56, 56 are rotated to the abutment position P3, there is a possibility that the hooks 56, 56 collide with the upper surface of the cargo R2. Therefore, it is possible that the hooks 55, 55 cannot be brought into the abutment position P2, and the hooks 56, 56 cannot be allowed to enter. Enter the abutment position P3.

Here, first, as shown in FIG. 8(b), the cargo detecting sensors S2 and S3 operate the conveyor belt 6A toward the rear side until the detected state is switched from the detected state to the non-detected state.

Next, as shown in FIG. 8(c), the cargo detecting sensor S4 moves the conveyor belt 6B toward the rear side from the detected state to the non-detected state. By the above operation, the cargo R1 is disposed at the center portion of the mounting area FA, and the cargo R2 is disposed at the center portion of the mounting area FB. Thereby, the hooks 55 and 55 can be brought into the contact position P2, and the hooks 56 and 56 can be brought into the contact position P3.

Further, in another example, as shown in FIG. 9( a ), the cargo R1 is disposed in the mounting area FB and is slightly exceeded from the mounting area FB along the front end of the mounting area FA. Thereby, the cargo detecting sensor S3 is in the detected state. The cargo R2 is disposed along the front end of the mounting area FB, and the cargo detecting sensor S4 is in the detected state. In this case, if the hooks 55, 55 are rotated to the abutment position P2, there is a possibility that the hooks 55, 55 collide with the upper surface of the cargo R1. Further, if the hooks 56, 56 are rotated to the abutment position P3, there is a possibility that the hooks 56, 56 collide with the upper surface of the cargo R2. Therefore, there is a possibility that the hooks 55, 55 cannot enter the abutment position P2, and the hooks 56, 56 cannot be brought into the abutment position P3. In this case, since the two goods R1 and R2 are disposed on the same conveyor belt 6B, the goods R1 and R2 cannot be independently transferred.

Here, first, as shown in FIG. 9(b), the goods detection sensor S4 is switched from the detected state to the non-detected state, and the cargo inspection is performed. The sensor S2 is switched from the non-detected state to the detected state, and both the conveyor belts 6A and B are operated toward the rear side.

Next, as shown in FIG. 9(c), the cargo detecting sensor S2 moves the conveyor belt 6A toward the rear side from the detected state to the non-detected state, and the cargo detecting sensor S3 is the secondary detecting device. The conveyor belt 6B is moved toward the front side until the state is switched to the non-detected state. By the above operation, the cargo R1 is disposed at the center portion of the mounting area FA, and the cargo R2 is disposed at the center portion of the mounting area FB. Thereby, the hooks 55 and 55 are brought into the contact position P2, and the hooks 56 and 56 can be made to enter the contact position P3. Moreover, it is possible to independently transfer the goods R1 and R2 independently.

Further, in another example, as shown in FIG. 10( a ), the goods R1 and R2 having a relatively small width in the Y direction are disposed at the center of the mounting area FB. In this case, since the two goods R1 and R2 are disposed on the same conveyor belt 6B, the goods R1 and R2 cannot be independently transferred.

Here, first, as shown in FIG. 10(b), the cargo detecting sensors S2 and S3 operate both the conveyor belts 6A and B toward the rear side from the non-detected state to the detected state.

Next, as shown in FIG. 10(c), the cargo detecting sensor S2 moves the conveyor belt 6A toward the rear side from the detected state to the non-detected state, and the cargo detecting sensor S3 is the secondary detecting device. The conveyor belt 6B is moved toward the front side until the state is switched to the non-detected state. By the above operation, the cargo R1 is disposed at the center portion of the mounting area FA, and the cargo R2 is disposed at the center portion of the mounting area FB. Thereby becoming a cargo R1 and R2 are each independently transferred.

Further, in another example, as shown in Fig. 11(a), the cargo R1 having a relatively small width in the Y direction is disposed at the center portion of the mounting field FB, and the similarly small cargo R2 is along the same. The front end of the mounting area FB is placed in the mounting area FB. In this case, if the hooks 56, 56 are rotated to the abutment position P3, there is a possibility that the hooks 56, 56 collide with the upper surface of the cargo R2. Therefore, there is a possibility that the hooks 56, 56 cannot be brought into the abutment position P3. In this case, since the two goods R1 and R2 are disposed on the same conveyor belt 6B, the goods R1 and R2 cannot be independently transferred.

Here, first, as shown in FIG. 11(b), the cargo detecting sensors S2 and S3 operate both the conveyor belts 6A and B toward the rear side until the non-detected state is switched to the detected state.

Next, as shown in FIG. 11(c), the cargo detecting sensor S2 moves the conveyor belt 6A toward the rear side from the detected state to the non-detected state, and the cargo detecting sensor S3 is the secondary detecting device. The conveyor belt 6B is moved toward the front side until the state is switched to the non-detected state. By the above operation, the cargo R1 is disposed at the center portion of the mounting area FA, and the cargo R2 is disposed at the center portion of the mounting area FB. Thereby, the hooks 56 and 56 can be made to enter the contact position P3. Moreover, it is possible to independently transfer the goods R1 and R2 independently.

As described above, in the stacker crane 1 of the present embodiment, the conveyor belt 6 has the conveyor belt 6A functioning as the first conveyor belt and the second conveyor belt being disposed on the front side of the conveyor belt 6A in the front-rear direction. Features When the conveyor belt 6B and the controller 7 are placed on the conveyor belt 6 with two cargos R1 and R2, the conveyor belt 6A and the conveyor belt 6B can be independently driven to adjust two cargoes R1 and R2. s position. Thereby, the position of the two goods R1, R2 on the conveyor belt 6 can be optimally adjusted. Moreover, it is possible to transfer efficiently without stopping the operation of the stacking crane 1. Further, for example, by adjusting the position of the two goods R1 and R2 during the movement of the shed 91 toward the transfer destination, the cycle can be improved.

Although the embodiment of the transfer device of the present invention has been described above, the present invention is not limited to the above embodiment. For example, in the above-described embodiment, the transfer of the load between the stacker 1 and the carrier 90L has been described. The hooks 56 are used to mount the goods R2 placed in the shed 91 in the mounting field FB (Fig. 3). Reference). However, the cargo R1 disposed in the shed 91 may be placed on the mounting area FA by using the hook 55. In this case, the hooks 55 and 55 function as the second hook. In this case, the contact position P2 is the second abutment position.

Further, in the above-described embodiment, the case where the load between the stacker crane 1 and the carrier 90L is removed, and the cargo R2 disposed in the mounting area FB is detached from the shed 91 by the hook 55 (5th) Figure reference). However, the cargo R1 disposed in the mounting area FA may be placed in the shed 91 by using the hook 54. In this case, the hooks 54, 54 function as the first hook. In this case, the contact position P1 is the first contact position.

Further, in the above embodiment, the transfer between the stacker crane 1 and the carrier 90L has been described. However, in the stacker 1 and the carrier Transfer between 90R is also possible. In this case, in the Y direction, the side of the carrier 90R is the front side, and the side of the stacking crane 1 is the rear side. Further, the mounting field FB is the first mounting field, and the mounting field FA is the second mounting field. Further, the conveyor belt 6B functions as a first conveyor belt, and the conveyor belt 6A functions as a second conveyor belt.

In the case where the load is carried out between the stacker 1 and the carrier 90R, the cargo R2 placed in the shed 91 may be placed on the mounting area FB by using the hook 55. In this case, the hooks 55 and 55 function as the second hook. In this case, the contact position P2 is the second abutment position.

In the case where the transfer is performed between the stacker 1 and the carrier 90R, the cargo R1 placed in the shed 91 may be placed on the mounting area FA by the hooks 54. In this case, the hooks 54, 54 function as the second hook. In this case, the contact position P1 is the second contact position.

In the case where the transfer between the stacker crane 1 and the carrier 90R is performed, the cargo R1 disposed in the mounting area FA may be detached from the shed 91 using the hook 55. In this case, the hooks 55 and 55 function as the first hook. In this case, the contact position P2 is the first contact position.

In the case where the stacking crane 1 and the carrier 90R are transferred between the stacker 1 and the carrier 90R, the cargo R2 disposed in the mounting area FB may be detached from the shed 91. In this case, the hooks 56 and 56 function as the first hook. In this case, the contact position P3 is the first contact position.

Further, in the above embodiment, as shown in Fig. 3, the controller 7 calculates the position P5 at which the leading ends of the hooks 56, 56 and the cargo R2 start to abut when the arms 5, 5 are contracted, as the hooks 56, 56 and the goods R2. Front end can be abutted The first position of the arms 5, 5. However, the position (first position) P7 on the rear side of the position P5 may be calculated as the first position of the arms 5 and 5 that the hooks 56 and 56 and the front end of the cargo R2 can reliably contact.

[Industrial Availability]

According to the present invention, it is possible to provide a transfer device that can stably transfer goods.

F‧‧‧Loading field

FA, FB‧‧‧Loading field

P2‧‧‧2nd abutment position

P3‧‧‧3rd abutment position

R1‧‧‧ goods

R2‧‧‧ goods

S1~S4‧‧‧ goods detection sensor

1‧‧‧Head height crane (transfer device)

2‧‧‧ Walking trolley

3‧‧‧ pillar installation

4‧‧‧ Lifting table

5‧‧‧arm

6‧‧‧Conveyor belt

6A‧‧‧ conveyor belt

6B‧‧‧ conveyor belt

54‧‧‧ hook

55‧‧‧ hook

56‧‧‧ hook

80‧‧‧ Track

90‧‧‧Carriage

90L‧‧‧ carrier

91‧‧‧ shed

7‧‧‧ Controller

Claims (3)

A transfer device comprising: an arm that is extended toward the front side in the front-rear direction, and the goods placed in the mounting area are detached from the shed, and are shrunk toward the rear side along the front-rear direction, and are disposed The cargo of the shed is loaded in the mounting field; and the conveyor belt is disposed in the mounting field to move the cargo along the front-rear direction; and the controller controls the operation of the arm and the conveyor belt; The arm has a first hook that is movable forward and backward with respect to the first abutting position that can be brought into contact with the cargo, and enters the first abutting position when the cargo placed in the mounting area is detached from the shed. Abutting against a rear end of the cargo disposed in the mounting field; and the second hook is movable forward and backward with respect to a second abutting position at which the cargo can be abutted, and loading the cargo placed in the shed The second mounting position is in contact with the front end of the cargo placed in the shed, and the controller removes the cargo placed in the mounting area toward the shed. In other cases, the conveyor belt is operated toward the front side at a speed lower than the elongation speed of the arm, and when the cargo placed in the shed is loaded in the mounting field, the speed is lower than the contraction speed of the arm. The conveyor belt is operated toward the rear side. The transfer device of claim 1, wherein The arm has a position at the position between the first hook and the second hook in the front-rear direction, and has a position at which the front end of the cargo disposed in the shed is detected at a position close to the second hook. In the sensor, when the arm is extended, the second arm can be calculated based on the position of the arm when the cargo detecting sensor detects the leading end of the cargo placed in the shed. The hook can be placed at the first position of the arm that is in contact with the front end of the cargo in the shed, and when the cargo placed in the shed is loaded in the mounting area, the first position is higher than the first position. At the second position, the arm is operated by the first contraction speed, and the arm is operated by the second contraction speed lower than the first contraction speed from the second position to the first position, and the first position is The arm is operated by a third contraction speed higher than the second contraction speed, and the conveyor belt is moved to the rear side by a fourth speed lower than the third contraction speed. The transfer device according to claim 1 or 2, wherein the conveyor belt has a first conveyor belt and a second conveyor belt disposed on a front side of the first conveyor belt in the front-rear direction. In the case where the two cargos are placed on the conveyor belt, the controller can adjust the interval between the two cargos by independently driving the first conveyor belt and the second conveyor belt.